package com.peng.controller;

import com.peng.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;

@RestController
@RequestMapping("/common")
public class CommonController {
    @Value("${reggie.path}")
    private String FilePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file){
        String originalFilename = file.getOriginalFilename();
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        String str=UUID.randomUUID().toString()+ substring;
        File file1 = new File(FilePath);
        if (!file1.exists()){
            file1.mkdirs();
        }
        try {
            file.transferTo(new File(FilePath,str));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return R.success(str);
    }

    @GetMapping("/download")
    public void download(String name, HttpServletResponse response){
        try {
            FileInputStream fileInputStream = new FileInputStream(new File(FilePath + name));
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
            int len;
            byte[] bytes = new byte[1024];
            while ((len=fileInputStream.read(bytes))!=-1){
                outputStream.write(bytes,0,len);
            }
            fileInputStream.close();
            outputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}
